DIFFER
DIFFER Publication

Effect of optical damage resistant dopants on the dielectric properties of LiNbO3: Insight from broadband impedance spectroscopy and Raman scattering

Label Value
Author
Abstract

Optical damage limits the application range of congruent LiNbO3. This problem is commonly overcome by adding optical-damage-resistant cations. Here, the influence of doping with optical-damage-resistant Mg and Zn on the ionic and piezoelectric contributions to the dielectric permittivity is investigated in a broad frequency range (1 mHz–2 THz). It is shown that the two dopants have radically different influences on the variation of ionic permittivity with doping, in spite of their similarities with respect to the crystallographic structure. Raman spectroscopy reveals that the difference in permittivity can be traced to the effect of Mg and Zn doping on the susceptibility of the phonon modes. Both observations point to differences in the defect incorporation mechanisms.

Year of Publication
2018
Journal
Journal of Applied Physics
Volume
123
Issue
15
Number of Pages
154105
DOI
PId
27e9afbe65205682234276be922e8d3f
Alternate Journal
J. Appl. Phys.
Journal Article
Download citation